WO2023000928A1 - Procédé de détection de défaut pour écran en mosaïque, et support, produit et système - Google Patents

Procédé de détection de défaut pour écran en mosaïque, et support, produit et système Download PDF

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Publication number
WO2023000928A1
WO2023000928A1 PCT/CN2022/101353 CN2022101353W WO2023000928A1 WO 2023000928 A1 WO2023000928 A1 WO 2023000928A1 CN 2022101353 W CN2022101353 W CN 2022101353W WO 2023000928 A1 WO2023000928 A1 WO 2023000928A1
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WO
WIPO (PCT)
Prior art keywords
signal
hdmi
lvds
hdmi signal
initial
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PCT/CN2022/101353
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English (en)
Chinese (zh)
Inventor
罗益峰
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广州朗国电子科技股份有限公司
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Publication of WO2023000928A1 publication Critical patent/WO2023000928A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
    • G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details

Definitions

  • the invention relates to the field of splicing screen fault detection, in particular to a splicing screen fault detection method, equipment, medium, product and system.
  • the existing splicing screen occasionally has a single screen or several screens that are not bright during use, and this situation is usually due to the failure of the HDMI receiving port or LVDS output port in the screen control system. Correctly displays content sent by external consoles.
  • the traditional detection method for the failure of the screen to display the playback content due to the failure of the HDMI receiving port or the LVDS output port is mainly: after the staff actively finds that the screen cannot be displayed normally, immediately judge whether the screen itself is faulty, if not, then confirm If the HDMI receiving port or LVDS output port fails, manually report the fault message to the external console.
  • the existing fault detection for HDMI receiving port or LVDS output port is mostly through manual active discovery, which reduces the processing efficiency and detection efficiency of such faults, thus affecting the normal use of the splicing screen.
  • one of the purposes of the present invention is to provide a fault detection method for splicing screens, which can solve the problem that most of the existing fault detections for HDMI receiving ports or LVDS output ports are found manually and actively. This method reduces the processing efficiency and detection efficiency of such faults, thereby affecting the normal use of the splicing screen.
  • the second object of the present invention is to provide a computer-readable storage medium, which can solve the problem that most of the existing fault detections for HDMI receiving ports or LVDS output ports are manually and actively discovered, which reduces the processing of such faults Efficiency and detection efficiency, thus affecting the normal use of the splicing screen.
  • the third object of the present invention is to provide a computer program product, which can solve the problem that most of the existing fault detections for HDMI receiving ports or LVDS output ports are manually and actively found, which reduces the processing efficiency of such faults and Detection efficiency, thus affecting the normal use of the splicing screen.
  • the fourth object of the present invention is to provide a fault detection system for splicing screens, which can solve the problem that most of the existing fault detections for HDMI receiving ports or LVDS output ports are manually found actively, which reduces the risk of such faults.
  • the processing efficiency and detection efficiency affect the normal use of the splicing screen.
  • a fault detection method for a splicing screen includes several screens, each of which is controlled by a uniquely corresponding main control drive board, and the main control drive board is provided with a first HDMI signal receiving port, A second HDMI signal receiving port, an LVDS signal output port, and a signal converter, the signal converter is respectively connected to the second HDMI signal receiving port and the LVDS signal output port, and the method is performed by the main control drive board execution, including the following steps:
  • Receiving the initial HDMI signal receiving the initial HDMI signal input by the external console through the first HDMI signal receiving port, and converting the initial HDMI signal into an LVDS signal;
  • Output LVDS signal output the LVDS signal to the control panel in the screen through the LVDS signal output port for image display, and output the LVDS signal to the signal converter through the LVDS signal output port;
  • the current HDMI signal receiving the current HDMI signal input by the signal converter through the second HDMI signal receiving port, the current HDMI signal is obtained by converting the LVDS signal by the signal converter;
  • the original HDMI signal before converting the original HDMI signal to an LVDS signal, it also includes saving the original HDMI signal as a picture in BMP format to obtain the original BMP picture, and before the signal comparison, it also includes saving the current HDMI signal as a picture in BMP format , to get the current BMP picture.
  • the signal comparison specifically includes: comparing the similarity between the current BMP picture corresponding to the current HDMI signal and the initial BMP picture corresponding to the initial HDMI signal, to obtain a comparison result.
  • the initial HDMI signal before saving the initial HDMI signal as a picture in BMP format, it also includes unifying the data format of the initial HDMI signal into RGB format, and before saving the current HDMI signal as a picture in BMP format, it also includes saving the current HDMI signal.
  • the data format of the signal is unified as RGB format.
  • the preset condition is that the similarity is not less than 80%.
  • a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to detect a splicing screen failure detection method described in this application.
  • a computer program product includes a computer program, and when the computer program is executed by a processor, a splicing screen fault detection method described in this application is implemented.
  • a fault detection system for a splicing screen includes several screens, including several main control drive boards, each main control drive board is used to control the only corresponding screen in the splicing screen, and the main control drive board is set There are a first HDMI signal receiving port, a second HDMI signal receiving port, an LVDS signal output port, and a signal converter, and the signal converter is respectively connected to the second HDMI signal receiving port and the LVDS signal output port, and the The LVDS signal output port is connected to the TCON board in the corresponding screen;
  • the main control driver board receives the initial HDMI signal sent by the external console through the first HDMI signal receiving port, and the main control driver board converts the initial HDMI signal into an LVDS signal and outputs it to the TCON board through the LVDS signal output port And a signal converter, the signal converter LVDS signal is converted into the current HDMI signal, the signal converter sends the current HDMI signal to the main control driver board through the second HDMI signal receiving port, the main control The driver board compares the current HDMI signal with the initial HDMI signal to obtain a comparison result containing similarity; when the comparison result does not meet the preset condition, the main control driver board determines that there is a fault and generates a fault message, The main control drive board sends fault information to the external console.
  • model of the signal converter is an ITE6263 LVDS-HDMI converter.
  • main control driver board is connected with the external console through a RS232 serial port.
  • the beneficial effect of the present invention lies in: a fault detection method of a splicing screen in the present application, by outputting the LVDS signal to the TCON board in the screen through the LVDS signal output port, the LVDS signal is passed through the LVDS signal
  • the output port is output to the signal converter, and the current HDMI signal obtained by converting the LVDS signal is received by the signal converter, and the current HDMI signal is compared with the initial HDMI signal, so as to judge the HDMI receiving port or LVDS output according to the comparison result Whether the port fails, the whole process does not require manual participation, and realizes the intelligent fault detection of the HDMI receiving port or the LVDS output port, improves the fault detection efficiency, ensures the fault handling efficiency of the DMI receiving port or the LVDS output port, and improves the user experience. use satisfaction.
  • FIG. 1 is a schematic flow chart of a splicing screen fault detection method according to the present invention.
  • the splicing screen involved includes several screens, and each of the screens is controlled by a unique corresponding main control drive board, and the main control drive board is provided with a first HDMI signal receiving port, a second HDMI signal receiving port, and a second HDMI signal receiving port.
  • Receiving port, LVDS signal output port, signal converter, the signal converter is respectively connected with the second HDMI signal receiving port and the LVDS signal output port, each screen on the splicing screen is provided with a The TCON board that converts the image signal and displays it on the screen, the LVDS signal output port is connected with the TCON board.
  • the main control driver board corresponding to each screen is arranged on the back of the screen, and each main control driver board is provided with at least two HDMI signal receiving ports, and the order for receiving HDMI signals is the first HDMI signal receiving port, if there are two HDMI signal receiving ports in total, the other HDMI signal receiving port is designated as the second HDMI signal receiving port, if there are more than two HDMI signal receiving ports in total, the remaining unreceived One of the HDMI signal receiving ports that receive HDMI signals is selected as the second HDMI signal receiving port.
  • the HDMI signal receiving port also known as high-definition multimedia interface
  • High-Definition Multimedia Interface is the first all-digital high-definition, multi-sound interface that supports transmission on a single cable without compression.
  • digital interface for channel audio and smart format and control command data.
  • LVDS Low-Voltage Differential Signaling
  • Low-Voltage Differential Signaling is a differential signal technology with low power consumption, low bit error rate, low crosstalk and low radiation. This transmission technology can reach more than 155Mbps.
  • the core of LVDS technology is the use of extremely Low voltage swing and high-speed differential transmission of data can realize point-to-point or point-to-multipoint connection.
  • the transmission medium can be copper PCB connection or balanced cable.
  • the TCON board is generally called a logic board or a screen driver board. Its main function is to process the LVDS image data input signal (input signal includes RGB data signal, clock signal, and control signal) sent by the digital board through the logic board. It can drive the LVDS signal of the LCD screen, and then directly send it to the LVDS receiving chip of the LCD screen.
  • the above signal converter is an LVDS-HDMI converter model ITE6263.
  • a fault detection method for a splicing screen of the present invention includes the following steps:
  • the main control driver board receives the initial HDMI signal input by the external console through the first HDMI signal receiving port, and converts the initial HDMI signal into an LVDS signal.
  • the data format of the HDMI signal is YUV format or RGB format. Therefore, before converting the initial HDMI signal to LVDS signal, the main control driver board judges whether the data format of the initial HDMI signal is YUV format or RGB format. If it is YUV format, then It is converted into RGB format, and the conversion of the two is specifically shown in the following formula (1):
  • R is the Red value of HDMI signal in RGB format
  • G is the Green value of HDMI signal in RGB format
  • B is the Blue value of HDMI signal in RGB format
  • Y is the brightness value of HDMI signal in YUV format
  • U is the chroma value of the HDMI signal in the YUV format
  • V is the density value of the HDMI signal in the YUV format. If it is in RGB format, no conversion is required.
  • the purpose of this step is to unify the data format of all HDMI signals into RGB format. After unifying the data format of the HDMI signal into the RGB format, the initial HDMI signal is saved as a picture in the BMP format to obtain the initial BMP picture.
  • the main control driver board outputs the LVDS signal to the TCON board in the screen through the LVDS signal output port for image display, and at the same time outputs the LVDS signal to the signal converter through the LVDS signal output port.
  • the signal converter receives the LVDS signal input from the LVDS signal output port, and converts the LVDS signal into the current HDMI signal, and the signal converter inputs the current HDMI signal to the main control driver board through the idle second HDMI signal receiving port.
  • the main control driver board receives the current HDMI signal input by the signal converter through the second HDMI signal receiving port, and the current HDMI signal is obtained by converting the LVDS signal by the signal converter.
  • the main control driver board after receiving the current HDMI signal, the main control driver board also needs to judge whether the current HDMI signal is in YUV format or RGB format. If it is in YUV format, it will be converted to RGB format to ensure the current HDMI signal
  • the data format is RGB format. Unify the data format of the current HDMI signal into the RGB format before performing the signal comparison step.
  • the main control driver board compares the current HDMI signal with the initial HDMI signal to obtain a comparison result containing similarity. Before this step, it is also included that the main control driver board saves the current HDMI signal as a picture in BMP format to obtain the current BMP picture. Therefore, this step specifically includes: comparing the similarity between the current BMP picture corresponding to the current HDMI signal and the initial BMP picture corresponding to the initial HDMI signal, and obtaining a comparison result containing similarity.
  • the present invention also provides a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to detect a splicing screen fault described in this application.
  • the present invention also provides a computer program product, including a computer program.
  • a computer program product including a computer program.
  • the computer program is executed by a processor, the splicing screen fault detection method described in this application is implemented.
  • the present invention also provides a fault detection system for a splicing screen
  • the splicing screen includes several screens, including several main control drive boards, each main control drive board is used to control the only corresponding screen in the splicing screen, the main control
  • the driver board is provided with a first HDMI signal receiving port, a second HDMI signal receiving port, an LVDS signal output port, and a signal converter, and the signal converter is connected to the second HDMI signal receiving port and the LVDS signal output port respectively.
  • the LVDS signal output port is connected with the TCON board in the corresponding screen;
  • the main control driver board receives the initial HDMI signal sent by the external console through the first HDMI signal receiving port, and the main control driver board converts the initial HDMI signal into an LVDS signal and outputs it to the TCON board through the LVDS signal output port And a signal converter, the signal converter LVDS signal is converted into the current HDMI signal, the signal converter sends the current HDMI signal to the main control driver board through the second HDMI signal receiving port, the main control The driver board compares the current HDMI signal with the initial HDMI signal to obtain a comparison result containing similarity; when the comparison result does not meet the preset condition, the main control driver board determines that there is a fault and generates a fault message, The main control drive board sends fault information to the external console.
  • the model of the signal converter is an ITE6263 LVDS-HDMI converter.
  • the main control driver board is wired with the external console through the RS232 serial port.
  • a fault detection method for a splicing screen in the present application by outputting the LVDS signal to the TCON board in the screen through the LVDS signal output port while outputting the LVDS signal to the signal converter through the LVDS signal output port, the receiving signal converter
  • the current HDMI signal obtained by converting the LVDS signal is compared with the initial HDMI signal, so as to judge whether the HDMI receiving port or the LVDS output port is faulty according to the comparison result.
  • the whole process does not require manual participation, and realizes
  • the intelligent fault detection of HDMI receiving port or LVDS output port improves the fault detection efficiency, ensures the fault handling efficiency of DMI receiving port or LVDS output port, and improves user satisfaction.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne un procédé de détection de défaut pour un écran en mosaïque. Le procédé consiste à recevoir un signal HDMI initial, à émettre un signal LVDS, à recevoir le signal HDMI actuel, à effectuer une comparaison de signaux et à envoyer des informations de défaut. Au moyen du procédé de détection de défaut, une détection de défaut intelligente pour un port de réception HDMI ou un port de sortie LVDS est obtenue, ce qui permet d'améliorer l'efficacité de détection de défaut, d'assurer l'efficacité de traitement de défaut du port de réception HDMI ou du port de sortie LVDS, et d'améliorer la satisfaction d'utilisation d'un utilisateur.
PCT/CN2022/101353 2021-07-21 2022-06-27 Procédé de détection de défaut pour écran en mosaïque, et support, produit et système WO2023000928A1 (fr)

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CN202110825665.6A CN113270058B (zh) 2021-07-21 2021-07-21 一种拼接屏的故障检测方法、介质、产品及系统
CN202110825665.6 2021-07-21

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CN113270058B (zh) * 2021-07-21 2021-12-03 广州朗国电子科技股份有限公司 一种拼接屏的故障检测方法、介质、产品及系统

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